can't install updates and got the package system is broken with unmet dependencies

Question

I can't install updates and start getting the following error on Ubuntu 20.04.4 LTS. It looks like python package issue. How can I solve it?

Answer 1

According to the answer https://askubuntu.com/a/1404848/177906, I resolved the issue as below.

deleted all Python 3.7 packages:

sudo apt --fix-missing purge $(dpkg -l | grep 'python3\.7' | awk '{print $2}')

and installed the same packages again:

sudo apt install libpython3.7-minimal libpython3.7-stdlib python3.7 python3.7-minimal python3.7-venv